Ville



3 SheetsSheet 1.

( No Model.)

Nb E S A G H T I W S E M E J. J. MELVIL APPARATUS FOR TREATING SUBS No. 520,369.

Patented May 22, 1 894.

(No Model.) 3 Sheets-Sheet 2. J. J. MELVILLE. APPARATUS FOR TREATING SUBSTANCES WITH GASES Patented May 22, 1894.

Invenia T winesssj- THE NAYIONAL umoemwmma COMPANY.

WASHINGTON. n. c.

(No Model.) 3 Sheets-Sheet 3. J. J. MELVILLE. APPARATUS FOR TREATING SUBSTANCES WITH GASES.

Patented May 22, 1894.

UNITED STATES JAMES J. MELVILLE, OF NORTHWIOH, ENGLAND.

APPARATUS FOR TREATING SUBSTANCES WITH GASES.

SPECIFICATION formingpart of Letters Patent No. 520,369, dated May 22, 1894. Application filed September 28, 1893. Serial No- 486,718- (No model.)

To aZZ whom it may concern.-

Be it known that I, JAMES JOSEPH MEL- VZILLE, a subject of the Queen of Great Britain, residing at 6Besswicks Road, Winnington,Northwich,in the countyot' Chester, in the Klngdom of England, have invented certain new and useful Improvements in Apparatus for Treating Solid, Semi-Solid, or Liquid Substances with Gases, of which the followingis a specification. This invention has for its object an apparatus for treating solids or semi-solids with gases in a more convenient and thorough manner and without the handling at present required.

The invention is best described by aid of the accompanying drawings, in which- Figure 1 is a sectional elevation, and Fig. 2, a plan of the apparatus; Fig. 3, a section on the center line of the annulus, showing the feed apparatus and entrance and exit pipes; and Fig. 4, asimilar view showing one of the scrapers as applied above the revolving table. Fig. 5 is a detail transverse section of the rotary bed and its hood on a radial line immediately to the right of the feed hopper.

A A is a rotating annular disk bed or trough; B B, a metallic or other hood, covering the same. This hood is preferably stationary and fixed and at one radius of the annulus there is a depression therein for-minga hopper 0 having a feeding device, the material to be placed in the hopper forming a seal to prevent the exit of gases. Any ordinary feeding apparatus which will spread the material evenly over the surface of the bed will do. Beyond this feed device, I insert, through the roof of the hood, the exit pipe E for the gases, On the opposite side of the hopper I place the gas entrance pipe F and also a V pointed plow G, plowing the solid matter to .a discharge pipe H on each side of the annular bed, except in the case where liquids are treated, in which case a simple discharge pipe may be all that is required. At various radii' I place bafile plates and scrapers I J, the battle plates I being arranged to bring the gases down to and in contact with the material treated, and the scrapers J to plow up and stir the same, so as to enable the gases more thoroughly to permeate it. The handles Y can be used to actuate the scrapers or to set them at any desired angle. The junction between the hood and therotating bed or table is formed by a circular lute K which varies with the nature of the gas used. When chlorin is the gas, a solution of a chlorid such as chlorid of calcium makes a good lute. When other gases are used, oil, Water or other liquid or solution not combining with and not a solvent of the gases can be used instead of chlorid of calcium. To prevent the gas at its entrance from passing to the right side of the hopper, there are flanges c projecting into the lots trough at both ends of the hopper C. On the bottom or preferably the side of the annular bed, I fix an annular rack L to be driven by acog wheel or toothed wheel M or its equivalent. The circular bed is supported on a series of rollers or wheels N, on'circular rails P. As it is desirable to economize space as much as possible, I prefer to arrange several of these circular beds and hoods, one over the other or alternately of larger or smaller diameter and concentric but at different levels. As, in some processes where materials-are treated with gases, there is a considerable amount of condensation of vapor, and in others (where great heat is evolved) cooling of the hood is desirable, I prefer to make the hood arched or pointed and supplied with an annular drip channel or trough at both of its lower edges or eaves interiorly as at R and exteriorly as at Q, and on the top with a perforated pipe S for spraying. This arched or pointed construction of the hood gives a sloping interior as {well as exterior upper portion to the hood and thus any liquid of condensation formed on said interior sloping portion will run down into the interior drip channels and be carried off therefrom by any suitable discharge pipe. The discharge chutes Hcan deliver into barrels U, tanks for other containers, and are provided with dampers or valves V operated by hand, whereby the material is from time to time dischaged as it accumulates in the chutes, and by this means all handling of the materialis avoided, except what may be necessary to tightly pack the material in the barrels, tanks, c. Revolving beds can be of bare cast iron or are covered with a material not acted upon by the materials treated or gases employed; thus, when the apparatus is used for making bleaching powder, I prefer to lag it with pitch pine or other wood tongued and grooved in place; or to cover it with bricks, tiles, or slates.

W are pillars, and X girders for support- 1ng a second apparatus above the first, but not shown.

What I claim is- 1. In an apparatus for treating solids, semisolids or liquids with gases, an annular rotatable table for carrying the substances to be treated, an annular hood covering said table, a depression in the hood forming a hopper, a plow, an outlet pipe for the substances and an inlet pipe for the gases on one side of the hopper and an outlet pipe for the gases and a feeding device for the substances in the hopper, said inlet and outlet pipes being so arranged that the gases travel in direction opposite to the direction in which the substances travel,- substantially as described.

2. In an apparatus for treating substances with gases the combination of a rotatable annular table, an annular hood covering the same, a depression in the hood forming a hopper a feeding device in said hopper for feeding the substances to be treated to said table,

an inlet pipe for the gases and an outlet pipe for the substance treated by the gases and an outlet pipe for the gases, substantially as described.

3Q In an apparatus for treating substanceswith gases the combination of an annular rotatable table, an annular stationary hood coverlng the same, lute troughs formed about the periphery of the bed of table and its inner annular edge and a flange formed on each vertical annular wall of the hood; said flanges adapted to enter respectively the said troughs, substantially as described.

4. In an apparatus for treating substances with gases the combination of an annular bed and an annular hood provided with pipes for the exit of the gases-and the substances being treated, the one rotatable independent of the other, a plow attached to the hood and a hopper and inlet pipe for gases immediately behind the plow, substantially as described.

5. In an apparatus for treating substances 5c with gases, the combination of an annular rotatable table, an annular stationary hood having a sloping interior and troughs passed around at the bottom of the slope whereby any liquid of condensation on the under surface of the said hood is caught by the troughs and not allowed to fall onto the table, substantially as described.

6. In combination with a rotatable table and a hood above the same, a water sprinkling device mounted on said hood and troughs for carrying off the water discharged therefrom, substantially as described.

7. In combination with a rotatable table, a thin metal sloping hood above the same, water sprinkling devices delivering onto said hood and catch water channels at the bottom of said slope inside of said hood whereby the moisture within said hood is condensed and caught, substantially as described.

8. An apparatus for treating substances with gases having an annular chamber provided with inlet and outlet pipes for the gases and substances to be treated by said gases respectively, and with a series of baffle plates whereby the gases are forced at intervals to descend onto the substances treated in order to pass below the baifle plates, substantially as described.

9. In an apparatus for treating substances with gases, the combination of a rotatable an- J. J. MELVILLE.

Witnesses:

. JOHN MGLACHLAN, H. P. SHOOBRIDGE. 

